Boiler



W. E. STARK March 17,1936.

BOILER Filed April 11, 1931 2 SheepsSheet 1 Eli) e72 Tm Wzllei .E. Siark arch 17, 1936. w STARK 2,Q34,fi71

- BOILER Filed April 11, 1931 2 Sheets-Sheet 2 Patented Mar. 17, 1936 L NE'E'ED STATES PATENT OFFICE BOILER Company, Ohio Cleveland, Ohio, a corporation of Application- April 11, 1931, Serial No. 529,437 13 Claims. (01. 122-223) This invention relates to boilers particularly designed for use as steam or hot water boilers employing a water circulating system.

The invention further relates to the sectional type of boiler and has for one of its objects the provision of a new type of intermediate section which is of unitary design and adapted to be positioned in adjacent reversed relation in the assembly of the boiler, thus requiring but a single pattern.

A further object of the invention resides in the relationship of the cooperating sections whereby a maximum area of heat absorbing surface is provided in a minimum of space.

is A further object of the invention is to provide a section of improved construction whereby a more rapid circulation of water is efiected with the result that the effectiveness of the heating surface is increased.

Another object of the invention is toprovide'an improved type of end section for the boiler.

Another object of the present invention is to produce a boiler incorporating the foregoing features which is neat in appearance, efiicient in op- 35 eration and simple in manufacture.

With the objects above indicated and other objects hereinafter explained in view the invention consists in the construction and combination of elements hereinafter described and claimed.

Referring to the drawings:

Figure 1 is a front elevational view of a boiler embodying the present invention, a portion of which is broken away so as to more clearly show the construction.

35 Fig. 2 is a transverse sectional view taken on line 2-2 of Figs. 1, 4 and 8 and showing the relationship of the various sections.

Fig. 3 is a transverse sectional view taken along the line 33 of Fig. 4.

Fig. 4 is a side elevational view of one of the intermediate sections, there being indicated in dotted lines the relative positions of the adjacent sections.

Fig. 5 is an end elevational view of Fig. 4.

Fig. 6 is a sectional view taken on line 66 of Fig. 4, but on an enlarged scale. 7

Fig. 7 is a sectional view taken on line 11 of Fig. 8, but on an enlarged scale.

Fig. 8 is a side elevational View of one of the end sections.

Fig. 9 is a transverse sectional view taken on line 9-9 of Fig. 8.

In the drawings there is illustrated a complete boiler of the so-called sectional type embodying the present invention. The important feature-of the invention resides in the provision of suitably designed end sections and intermediate sections wherein the intermediate and end sections are of such a construction as to be readily assembled into a complete boiler which is compact and more eflicient than the boilers of similar type which are manufactured at present. These intermediate sections are of substantially identical construc-' tion requiring but a single pattern with the result that adjacent sections may be reversely positioned so as to produce a compact structure. The end sections are also of substantially identical construction when an even number of intermediate sections are used which requires but one pattern and are likewise reversely positioned upon the opposite ends of the intermediate sections. However when an odd number of intermediate sections are used the end sections must be right and left hand respectively. s V

The boiler is represented generally by the numeral ID, the intermediate sections by I l and the end sections'by [2. In Figs. 2 and 5, two intermediate sections and two end sections I2', are shown forthe purpose of clearly illustrating the invention, but it is to be understood that any number of intermediate sections maybe employed, the number being dependent upon the use for which the boiler is intended.

The end sections l2 are castings of identical construction so a description of one end section will sufiice and each consists principally of an upper portion l3 which will be termed the water circulating portion. This water circulating portion l3 has an upper transverse passageway l4 and a lower transverse passageway [5 of more or less rectangular cross-section, which are connected at their opposite ends by' upright or vertical passageways l6 and l l. The passageways are communicating and provide a substantially continuous circulating passageway adapted to receive water which when suitably heated, in a manner to be later described, will establish a definite circulation thereof. A web [8 is preferably formed integral with the inner surfaces of the metal surrounding the passageways to prevent the passage of products of combustion therethrough. The section l2 has a depending extension l9 formed integral with the upper portion I 3' and offset at for a purpose to be later described. This depending extension l9 has a longitudinally extending passageway 2| as shown in Fig. 9, which communicates at its upper end with the circular passageway previously'describe'd'. The passageway 21 at the lower portion of the depending extension l9 extends inwardly at 2 2 and communicates with a transversely extending water inlet opening 23 surrounded by an attaching flange 24. 1

At the opposite side of the section l2 there is a vertically extending web 25 provided with an olfset portion 26 similar to the offset portion and positioned directly across therefrom. This construction practically provides a solid end section with the exception of a flanged opening 21 at the lower portion thereof adjacent the combustion chamber. A pair of legs 28 are provided at the opposite side of the section [2 to afford suitable support for the boiler.

The upper portion [3 of the section I2 is provided with a hot water or steam outlet opening 29 in substantial vertical alignment with the Water inlet opening 23 and in communication with the circulating passageway in the upper portion of the section. A laterally extending flange 39 is formed integral with the web 25 and extends throughout the length thereof, the upper portion 3| being inclined inwardly, as shown in Fig. 8, toward the outlet 29. The surface 32 of the upper portion [3 also extends inwardly toward the opening 29 at substantially the same angle as the upper portion 31 of the flange 30. Along the opposite side of the upper portion l3 and the depending extension I9 is a laterally extending flange 33 more clearly shown in Fig. 9, for a purpose to be later described.

Bafiie plates 34 are positioned within the upper transverse passageway l4 and positioned so as to direct the water within the passageway as indicated by the arrows. The flanged opening 21 in the end section !2 has integral inwardly extending attaching lugs 35 in the four opposite corners thereoffor the purpose of attaching a suitable enclosure. Extending vertically a suitable distance and formed integral with the upper portion i3 adjacentthe upright passageways l6 and I! are inwardly extending ribs 36 for the purpose of providing additional heat absorbing surfaces and for directing the products of combustion in their passage upwardly between the sections.

Inasmuch as the intermediate sections II are of identical constructions it will be suflicient to describe in detail the construction of a single section. The section l l is a casting and consists of an upper portion 31 which will be termed the water circulating portion and comprises an upper transverse passageway 38 and a lower transverse passageway'39 of substantially rectangular crosssection which are jointed together at their opposite ends by upright or vertical passageways 4B and 4| of substantially tubular. cross-section, the said passageways communicating to provide a substantially continuous circulating passageway through which the water when heated is adapted to circulate in a direction as indicated by the arrows in Fig. 4. This circulation is encouraged by transversely extending bafiies 42, placed Within the upper transverse passageway 38, and are formed integral with the walls of the section. The upper portion 31 of the section II has a transversely extending opening 43 surrounded by a continuous rib 44 formed integral with the surface of the section adjacent the said opening as is more clearly shown in Fig. 2, the purpose being to provide an opening through which the products of combustion may pass and at the same time provide additional heat absorbing surfaces. A plurality of ribs 45 are provided upon the opposite sides of the section and are vertically disposed, the same being integrally united with the side walls of the section. These ribs are so 10- cated as to direct the products of combustion in their upward travel in the desired path and at the same time to provide additional heat absorbing surfaces.

The top of the upper portion 31 of the section II is tapered toward a steam or hot water outlet opening 46 which is in communication with the circulating passageway previously described.

The section H has a depending extension 41 formed integral with the upper portion 3'! and is ofiset slightly at 48 for a purpose to be later described. This depending extension 4? has a longitudinally extending passageway 49 communicating at its upper end with the circulating passageway and at its lower end extends inwardly and is in communication with a transversely extending water inlet 5!). Suitable lugs 5| are provided upon the inturned lower end of the extension 41 and are adapted to receive and support the necessary burners. Upon the inner edge of the section I I there is a rib 52 which is integrally united with the section and extends substantially throughout the length of the upper portion 3'! and down a substantial distance upon the depending extension 4! as clearly shown in Fig. 4. This rib likewise is provided to direct the products of combustion in their travel upwardly and to further provide additional heat absorbing surfaces.

Upon the opposite or outer side of the section II there are laterally extending flanges 53 which extend upon opposite sides of the section and are integrally united therewith. The outer surfaces of the flanges 53 are slightly inclined from the longitudinal center thereof toward the edges of the flanges and extend substantially throughout the length of the depending extension 41 and the upper portion 31, terminating slightly short of the steam and hot water outlet 46 as shown in Fig. 4 so as to permit escapement of the products of combustion.

It is to be noted that the intermediate sections are arranged in adjacent reversed positions with the result that the laterally extending flanges 53 should be of sufiicient width so as to be in abutting relation with the flanges 33 of alternate sections. This arrangement is very clearly illustrated in Fig. 2 and the flanges of the end sections are also of suflicient width to be in abutting relation with the flanges 53 of the adjacent intermediate sections. Furthermore, the ribs .5 on the opposite sides of the intermediate sections are so arranged as to substantially abut with each other when the sections are in assembled positions, while the rib 44 of the intermediate section adjacent the end sections extends adjacent the ribs 36 upon the end sections l2.

It will be seen in Fig. 5 that the tops of the intermediate sections and end sections are of a narrower width at 54 than the width of the flanges 53, this arrangement being provided for the purpose of enabling the sections to be assembled with their flanges in abutting relation.

The intermediate sections H and end sections l2 are connected together at their upper ends by means of nipples and held in assembled relation by bolts 55 which extend through suitable lugs 56 formed integrally upon the end sections and secured by means of nuts 58'.

The lower portions of the intermediate sections I l and end sections I2 are also connected together by nipples inserted 1nto the water inlet openings 50 and 23 respectively, and are held in assembled relation by means of bolts which pass through lugs 51 formed integral with the end sections.

aosg-evr:

This construction affords. inter-communication between the adjacent sections and'provides individual water circulating systems in opposite directions in the adjacent sections.

The unit comprising the end sections l2 and the intermediate sections I lis supported upon the legs 28 of the end sections andis enclosed in a metal housing 58; which is insulated upon the inside thereof by asbestos .59 or other suitable insulating material. The insulation 59'in' the lower portion of the housing abuts with the depending extensions 4'! and l 9 and due to the oifset portions 48 and an air space 60 is providedaround the upper portion of the sections which tends to prevent dissipation of the heat from the sections through the housing 58.

A pair of burners 6| are supported within the combustion chamber formed by the depending portions 41 and Wei the sections and are supported upon the lugs 5| These burners are connected through mixers 62 and cooks 63 with a gas supply manifold 54 which is adjacent to the front of the housing 58 as shown in Fig. 1. A

pilot burner 65 is also provided and suitably connected with the gas supply manifold 64 to ignite the burners when the gas is turned on; The front of the housing 58 is provided with an'opening in alignment with the flanged opening 21 in the adjacent end section and is closed by a removable cover plate 66 adapted to rest upon the flanges of the opening 21. Any suitable means may be employed for maintaining the cover plate 56 in position and in the present instance a latch 6'! carried by the cover plate and cooperating with the end section is illustrated. The cover plate 66 may also be provided with a pivoted door 68 to enable any one to see within the combustion chamber. The casing may further be cut away at 69 to permit attachment of suitable pipes for the water inlet and steam and hot water outlet.

When the burners 6| have been lit the products of combustion pass upwardly between the various sections and tend to heat the water introduced therein, coming into contact with all of the heat absorbing surfaces provided during its upward travel therethrough and subsequently passing outwardly from the casing through a draft-hood 10 attached to the top of the housing 58.

While I have described the preferred embodiments of the invention it is to be understood that I am not to be limited thereto inasmuch as changes and modifications may be resorted to without departing from the spirit of the invention as defined in the appended claims.

Having thus described my invention I claim:

1. In a boiler, a pair of end sections, a plurality of intermediate hollow sections having laterally extending flanges along one side thereof, adjacent sections being arranged in reverse positions so that said flanges of alternate sections are in abutting relation, said sections being further provided with depending hollow extensions the lower ends of which extend inwardly and are connected together to provide a common conduit.

2. In a boiler, a pair of end sections, a plurality of intermediate hollow sections having laterally extending flanges along one side thereof, adjacent sections being arranged in reverse positions so that said flanges of alternate sections are in abutting relation, said sections being further provided with depending hollow extensions at one side thereof the lower ends of which extend inwardly-andFareconnected together to? pro.- videa: common conduit.

3; In= a" boiler, .a-ipair of end sections; a plurality-0f intermediate hollow sections having laterally extending flanges 'along one side. thereof, adjacent sections being arranged in reversed positions sorthattsaidflanges of' alternate sections are-in abuttingrelation, said sections being further providediwith depending hollow extensions ing with the firstmentioned passageways the lower ends of saidextensionsextending inwardly and connected togetherto provide a common conduit.

5. In a: boiler, end sections, a plurality of intermediate sectionsarranged in adjacent reversed positions, said sections having upper portions provided with continuous circulating passageways and'connected together at their upper portions to provide a common'outlet conduit, and depending portionsi at one side of saiofsectionsprovided with passageways communicating with said circulating passageways the lower ends thereof extending inwardly and connected together to provide a common inlet conduit.

6. In a boiler, a plurality of similar hollow sections, each section being provided with a depending leg adjacent one side thereof, said sections being disposed in alternate reversed positions with said depending legs of adjacent sections arranged on opposite sides, the upper portions of said sections being connected to a common outlet and the lower ends of said legs extending inwardly and being connected to a common inlet.

'7. In a boiler, a plurality of similar hollow sections, each section being provided with a depending leg adjacent one side thereof, said sections being disposed in alternate reversed positions with the depending legs of alternate sections in engagement to provide a substantially enclosed combustion chamber, the upper portions of said sections being connected to a common outlet and the lower ends of said legs extending inwardly and being connected together to provide a common inlet.

8. In a boiler, a plurality of similar hollow sections, each section being provided with a depending leg adjacent one side thereof, said sections being disposed in alternate reversed positions with said depending legs of adjacent sections arranged on opposite sides, the upper portions of said sections being connected to a common outlet and the lower ends of said legs being connected to a common inlet, said inlet and outlet extending transversely of said sections and being positioned upon the longitudinal center of said sections.

9. In a boiler, a plurality of substantially identical sections arranged in reverse alternate relation, each section comprising upright tubular portions spaced apart and hollow connecting portions at the opposite ends thereof to provide a circulating chamber, the upper portions of said section having an outlet opening communicating with said circulating chamber, and a hollow depending extension forming a continuation of one erally extending flanges along one side thereof,

adjacent sections being arranged in reversed positions so that said flanges of alternate sections are in abutting relation, said sections being provided with depending hollow extensions projecting beyond one side of the sections, the lower ends of said extensions extending inwardly and being connected together to provide a common conduit.

11. In a boiler, a pair of end sections, a plurality of intermediate hollow sections having laterally extending flanges along one side thereof, adjacent sections being arranged in reversed positions so that said flanges of alternate sections are in abutting relation, said sections being furtherprovided with depending hollow extensions projecting beyond the outer side thereof and arranged in abutting relation, the lower ends of said extensions extending inwardly and being connected together to form a common conduit.

12. In a boiler, a plurality of substantially identical intermediate sections arranged in adjacent reversed positions, said sections having transverse upper and lower passageways and connecting passageways at the opposite sides thereof, and depending extensions projecting beyond the sides of said sections and having passageways connecting with the first mentioned passageways, the lower ends of said extensions extending inwardly and being connected together to provide a common conduit.

13. A reversible section for a boiler comprising a portion having a continuous circulating passageway therein and an outlet opening in communication therewith, a second portion extending downwardlyand inwardly at one side of said first mentioned portion and having a passageway therein in communication with said first mentioned passageway, said second portion also having an inlet opening adjacent its lower end, said outlet and inlet openings being disposed in a plane inwardly of said second portion, and flanges extending outwardly from the opposite surfaces of said first and second portions adjacent their outer edges, said flanges running continuously from the top of the first mentioned portion to the bottom of the second mentioned portion and terminating short of the outlet and inlet openings.

WILLET E. STARK. 

